JP5322761B2 - Endoscope adapter - Google Patents

Description

The present invention relates to the endoscopic adapter.

  Conventionally, in order to observe in an organ holding a colored body fluid such as blood or urine, a method for removing the body fluid by inserting a balloon catheter and inflating the balloon to perform observation is known. (For example, refer to Patent Document 1).

JP-A-3-284265

  However, in the conventional observation method using a balloon catheter, in order to introduce the balloon catheter into the organ, an endoscope is introduced in advance, and the balloon catheter is introduced into the organ through a forceps channel provided in the endoscope. It is necessary to continue. In this case, since the distal end of an endoscope is usually flat, there is a disadvantage that the insertion property when inserting into a narrow body cavity is poor.

The present invention has been made in view of the above-described circumstances, and is an endoscope that enables easy observation inside an organ by eliminating colored body fluid while ensuring insertion of the endoscope. is an object of the present invention to provide a use adapter.

In order to achieve the above object, the present invention provides the following means.
The present invention is attached to a position covering the distal end surface of the insertion portion of the endoscope, and has a sharp end forming means configured to taper the distal end portion of the insertion portion toward the front, and at least a part of the sharp end forming means. provided, e Bei a transparent film member that is inflated by expansion means introduced through a channel provided in the insertion portion, wherein the sharp tip forming means, tapered fixed to the distal end of the insertion portion There is provided an endoscope adapter including a cap having a shape, the cap having an opening in a part thereof, and the membranous member being disposed so as to close the opening .

  According to the present invention, when the endoscope adapter is attached to the distal end of the insertion portion of the endoscope, a tapered distal end portion is formed in front of the distal end surface of the insertion portion by the sharp end forming means. Thereby, even if the distal end surface of the endoscope is flat, it can be easily inserted into a narrow body cavity or organ by the distal end portion tapered by the sharp end forming means. Since the sharp end forming means is provided with a film-like member at a part thereof, the body member in the organ or the body cavity is eliminated by expanding the film-like member by the expanding means introduced through the channel. Thus, the state of the inner wall of the organ or the inner wall of the body cavity can be clearly observed with an endoscope.

Further, the sharp end forming means includes a tapered cap fixed to the distal end of the insertion portion, the cap has an opening in a part thereof, and the film-like member closes the opening. in to Rukoto to, attach the cap to the distal end of the insertion portion, to improve the insertability of the tapered shape of the cap, by expanding the film member of the opening provided in the cap, and eliminate body fluid Thus, clear observation of the inner wall of the organ or the inner wall of the body cavity with an endoscope can be facilitated.

In the above invention, the expansion means may be a transparent liquid discharged from the distal end surface of the insertion portion through the channel.
By doing in this way, a membrane-like member can be easily expanded and body fluid can be easily removed.

Moreover, in the said invention, the wire extended from the front end surface of an insertion part via the said channel may be sufficient as the said expansion means.
By doing so, the membrane-like member pushed by the wire is expanded, so that the body fluid can be easily removed.

In the above invention, the membrane member is a balloon member that covers the distal end surface of the insertion portion and is attached to the outer peripheral surface, and the sharp end forming means is the distal end surface of the insertion portion of the endoscope. It may be provided with a shaft that protrudes forward from the shaft and stretches the balloon member in a substantially conical shape.
Thus, when the balloon member is covered so as to cover the distal end surface of the insertion portion, the balloon member is formed in a substantially conical tapered shape by the shaft protruding from the distal end surface of the insertion portion. Thereby, the insertion property of the insertion part into a narrow organ or body cavity can be improved, and the balloon member can be inflated by the expansion means supplied through the channel, thereby ensuring visibility.

Moreover, in the said invention, the said shaft may be inserted so that the movement to the direction which protrudes / projects from a front end surface via the said channel provided in the said insertion part is possible.
By doing so, the sharpness of the tapered shape can be adjusted by causing the shaft to protrude from the distal end surface via the channel and elastically deforming the membrane member.

Moreover, in the said invention, the treatment channel penetrated in the longitudinal direction may be provided in the said shaft, and the through-hole may be provided in the said balloon member in the position corresponding to the front-end | tip opening part of this treatment channel.
In this way, after the balloon member stretched by the shaft is inflated by the expansion means to secure the field of view, the treatment channel provided through the shaft when the site to be treated is specified The treatment instrument can be inserted through the front end of the shaft, and the treatment instrument can be protruded forward via the distal end opening of the shaft and the through hole of the balloon member.

Moreover, in the said invention, the said expansion means may be a transparent liquid discharged from the front end surface of an insertion part through the clearance gap between the said shaft and the said channel.
By doing in this way, the clearance gap is formed between a shaft and a channel by arrange | positioning a shaft so that a movement is possible in a channel. Then, by supplying the transparent liquid through the gap, the transparent liquid is supplied into the balloon member from the distal end surface of the insertion portion, and the balloon member is inflated to ensure visibility.

Moreover, in the said invention, the wire extended from the front end surface of an insertion part via the clearance gap between the said shaft and the said channel may be sufficient as the said expansion means.
By doing so, by supplying the wire through the gap formed between the shaft and the channel, the wire is supplied from the distal end surface of the insertion portion, and the balloon member pushed by the wire is inflated. To ensure visibility.

In addition, the reference example of the present invention includes a sharp end forming portion that tapers the front end of an elongated insertion portion having a channel extending in the longitudinal direction, and an opening provided in at least a part of the sharp end forming portion. And a transparent film-like member that is inflated by an expansion means that is provided so as to close the portion and is introduced through the channel.

According to this reference example , the tip end of the insertion portion is tapered by the tip end forming portion provided at the tip of the insertion portion, so that insertion into narrow organs and body cavities is improved and the tip is sharpened. By expanding the film-like member provided in the part by the expansion means, it is possible to eliminate the body fluid and secure the field of view.

In the present reference example , the expansion means may be a transparent liquid discharged from the distal end surface of the insertion portion through the channel.
In the above reference example , the extension means may be a wire that protrudes from the distal end surface of the insertion portion via the channel.

  According to the present invention, there is an effect that it is possible to easily perform observation in an organ by removing colored body fluid while ensuring insertion of an endoscope.

It is a longitudinal section showing an adapter for endoscopes concerning one embodiment of the present invention. It is a partial perspective view which shows the state which mounted | wore the insertion part of the endoscope with the adapter for endoscopes of FIG. It is a longitudinal cross-sectional view explaining the fixing method in the base end side of the endoscope at the time of mounting | wearing the insertion part with the adapter for endoscopes of FIG. It is a longitudinal cross-sectional view which shows the state which fastened the bush from the state of FIG. 3, and fixed the shaft to the treatment port. It is a longitudinal cross-sectional view which shows the state which mounted | wore the insertion part of an endoscope with the endoscope adapter of FIG. 1, and is supplying the fluid from a supply port. It is a perspective view which shows the balloon member expanded by supply of the fluid of FIG. It is a longitudinal cross-sectional view which shows the modification of the adapter for endoscopes of FIG. It is a longitudinal cross-sectional view which shows the other modification of the adapter for endoscopes of FIG. It is a longitudinal cross-sectional view which shows the case where it replaces with the fluid of FIG. 5 and a balloon member is expanded with a wire.

An endoscope adapter 1 according to an embodiment of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 and 2, the endoscope adapter 1 according to the present embodiment is a balloon member (membrane) made of a transparent material attached to a position covering the distal end surface 3a of the insertion portion 3 of the endoscope. And a shaft (sharp end forming means) 6 that protrudes from the distal end surface 3a of the insertion portion 3 through a forceps channel 5 provided in the insertion portion 3 along the longitudinal direction.

The balloon member 4 has a bag-like shape having an opening 7, and the opening 7 is sealed to the front of the distal end surface 3 a of the insertion portion 3 by covering the outer periphery with the outer peripheral surface of the insertion portion 3. The formed space A is formed.
The shaft 6 has flexibility and is bent in the forceps channel 5 in accordance with the curved shape of the insertion portion 3, while having axial rigidity and is pressed in the axial direction. It is made of a material capable of moving back and forth in the forceps channel 5.

  As shown in FIG. 3, the shaft 6 is inserted into the forceps channel 5 from the treatment port 8 provided on the proximal end side of the insertion portion 3, and from the distal end surface 3 a of the insertion portion 3 in the treatment port 8. The protruding length of is adjusted. Specifically, a ring-shaped seal member 9 made of an elastic material disposed between the treatment port 8 and the shaft 6 is compressed in the axial direction by a bush 10 fastened to the treatment port 8. 4, the seal member 9 may be expanded radially inward to seal the gap between the treatment port 8 and the shaft 6, thereby fixing the shaft 6 to the treatment port 8. It can be done.

  The shaft 6 is provided with a treatment channel 11 penetrating in the longitudinal direction at the center in the radial direction. Therefore, the treatment channel 11 is provided so as to penetrate from the proximal end side of the insertion portion 3 to the distal end of the shaft 6 protruding forward of the distal end surface 3a, and is inserted into the treatment channel 11 from the treatment port 8. A tool (not shown) can be guided to the front of the distal end surface 3 a of the insertion portion 3.

  The balloon member 4 is provided with an opening 4 a, and the periphery of the opening 4 a is hermetically bonded to the periphery of the distal end opening 11 a of the treatment channel 11 at the distal end of the shaft 6. Thereby, the space A enclosed between the outer surface of the balloon member 4 and the shaft 6 and the distal end surface 3a of the insertion portion 3 is sealed, while the treatment instrument introduced through the treatment channel 11 is removed from the distal end opening. The treatment can be performed by projecting to the outside of the balloon member 4 from 11a and the opening 4a.

The shaft 6 has an outer diameter that is sufficiently smaller than the inner diameter of the forceps channel 5 provided in the insertion portion 3, and is inserted between the forceps channel 5 and the inner surface of the forceps channel 5. A tubular gap is formed.
As shown in FIG. 5, a supply port 12 that supplies fluid B to be discharged from the opening of the forceps channel 5 on the distal end surface 3 a of the insertion portion 3 is connected to the tubular gap.

  As shown by an arrow C in FIG. 3, when the shaft 6 is pushed into the insertion portion 3 in the axial direction from the treatment port 8, the distal end of the shaft 6 moves forward relative to the distal end surface 3 a of the insertion portion 3. Therefore, the balloon member 4 bonded to the tip of the shaft 6 is pulled and stretched in a substantially conical shape, and is formed in a shape that tapers toward the tip.

The operation of the endoscope adapter 1 according to this embodiment configured as described above will be described below.
In order to perform internal observation with an endoscope using the endoscope adapter 1 according to the present embodiment, the endoscope is inserted into the forceps channel 5 opened at the distal end of the insertion portion 3 of the endoscope. One end of the shaft 6 constituting the adapter 1 is inserted and protruded from the treatment port 8 disposed on the proximal end side of the insertion portion 3 as shown in FIG.

  In this state, since the other end of the shaft 6 remains protruding from the distal end surface 3a side of the insertion portion 3, the balloon member 4 bonded to the other end of the shaft 6 is inserted into the insertion portion of the endoscope. 3 is attached to the tip. The attachment of the balloon member 4 may be tightened by the elasticity of the balloon member 4 by widening the opening 7 of the balloon member 4 and covering the outer peripheral surface of the insertion portion 3. May be adhered.

  Then, the shaft 6 protruding from the treatment port 8 is moved in the axial direction to adjust the amount of protrusion from the distal end surface 3 a of the insertion portion 3. Thereby, the balloon member 4 can be stretched by the shaft 6 and formed into a substantially conical shape. Further, the amount of protrusion of the shaft 6 is such that the seal member 9 inserted between the treatment port 8 on the proximal end side of the insertion portion 3 and the shaft 6 is compressed by fastening the bush 10 to the insertion portion 3. This can be determined by fixing the shaft 6.

  By doing so, the shape of the distal end of the insertion portion 3 including the endoscope adapter 1 can be configured to be tapered with few steps, and the area of the distal end surface is reduced to the area of the end surface of the shaft 6 to narrow the organ. The insertability into the inside can be improved. In this case, the taper form and hardness can be adjusted by increasing / decreasing the protrusion amount of the shaft 6 within the range of elastic deformation of the balloon member 4, and a taper form is formed when it protrudes more. be able to.

  In this way, the insertion portion 3 to which the endoscope adapter 1 is attached is inserted into the organ from the tip. In this case, since the balloon member 4 is made of a transparent material, when the body fluid is not present or when the body fluid is transparent, the field of view of the endoscope is secured even in the state as it is. Therefore, it is possible to insert the insertion portion 3 while observing with the endoscope up to the target observation site.

  When the distal end of the insertion portion 3 is inserted into an organ having a colored body fluid, for example, a blood vessel or a kidney, the field of view is lost due to the body fluid. In this case, a transparent fluid B, for example, physiological saline, is supplied from the supply port 12 disposed on the proximal end side of the insertion portion 3. As a result, the fluid B is guided to the distal end of the insertion portion 12 through a tubular gap between the forceps channel 5 connected to the supply port 12 and the shaft 6, and enters the closed space A formed by the balloon member 4. Supplied.

  When the fluid B is supplied into the balloon member 4, the balloon member 4 is inflated as shown in FIG. 6, and the outer surface thereof is brought into close contact with the inner surface of the organ. Thereby, the colored body fluid which existed between the distal end surface 3a of the insertion portion 3 and the inner surface of the organ is eliminated, and the field of view by the endoscope is secured.

  In the present embodiment, since the treatment channel 11 penetrating in the longitudinal direction is provided in the shaft 6, the treatment instrument inserted from the opening on the treatment port 8 side is inserted into the balloon member via the treatment channel 11. It is possible to project the inner surface of the organ by projecting more forward than 4. In this case, it is possible to reliably perform the treatment with the treatment tool in a state where the body fluid is removed and the field of view is secured.

  In the present embodiment, the balloon member 4 is formed in a substantially conical shape by the shaft 6 to form a tapered tip shape. Instead, as shown in FIG. A transparent film-like member 14 made of an elastic material may be attached to the opening made of the cap 13 that is cut in a direction inclined with respect to the cap 13 and the inclined surface 13a of the cap 13. By doing in this way, the insertion property improvement by a taper form and the ensuring of the visual field by expanding the membranous member 14 as shown by a chain line can be performed.

Further, as shown in FIG. 8, the film-like members 14 may be attached to the inclined surfaces 13a provided in two directions, respectively.
In the present embodiment, the balloon member 4 is inflated with a transparent liquid B such as physiological saline, but another transparent fluid B may be supplied instead. Further, as shown in FIG. 9, the balloon member 4 may be inflated by a wire 15 guided through a gap between the forceps channel 5 and the shaft 6.

  Further, in the present invention, the endoscope adapter 1 attached to the distal end of the insertion portion 3 of the endoscope has been described. However, the inner adapter provided with a membrane member such as the balloon member 4 integrally at the distal end of the insertion portion 3 is described. You may decide to comprise an endoscope apparatus.

B Fluid (expansion means)
DESCRIPTION OF SYMBOLS 1 Adapter for endoscopes 3 Insertion part 3a Tip surface 4 Balloon member (membrane-like member)
4a Opening (through hole)
5 Forceps channel (channel)
6 Shaft (sharp end forming means)
11 treatment channel 11a distal end opening 13 cap (sharp end forming means)
13a Opening 14 Film-like member 15 Wire (expansion means)

Claims (3)

It is attached to a position that covers the distal end surface of the insertion portion of the endoscope, and is provided at at least a part of the sharp end forming means that is configured to taper the distal end portion of the insertion portion forward. Bei example a transparent film member that is inflated by expansion means introduced through a channel provided in the insertion portion,
The sharp end forming means includes a tapered cap fixed to the distal end of the insertion portion,
The cap has an opening in a part thereof;
An endoscope adapter , wherein the membrane member is disposed so as to close the opening . The endoscope adapter according to claim 1, wherein the expansion means is a transparent liquid discharged from the distal end surface of the insertion portion through the channel. The endoscope adapter according to claim 1 , wherein the expansion means is a wire that protrudes from the distal end surface of the insertion portion via the channel.

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